Muffler for mixers.



J. F. PARKER, MUFFLER FOR mxgns. APPLICATION IILED' DEC. 6, 1907 Patented June 15, 1909.

' n eooeo Units JAMES F. PARKER, OF PITTSBURG, PENN SYLVANZA, iSSiGNOF. T9 PITTSBURG AUTQMATEC SMOKE PREVENTOR COMPANY. OF PITTSBURG.

PEN NSYLVAN IA, A GUPA RTNERSI-i H.

QIUFFLER In Patented Application filed December 6, 1987. Serial No. ecseoe.

T 0 all whom it may concern:

Be it known that I, JAMES F. PARKER, a citizen of the lfnited States of siding at Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvemonts in Mufflers for liiixers, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to mufflers for air and gas mixers, and its primary object to provide novel and effective means for mufflingor deadening the noise or roar created by the sudden. admixture of air anti gas under pressure.

A further object of the invent ion is, to provide novel means for securing the mufiler to the air inlet pipe. which will afford an ample supplybf air.

With these ends in view. the invention consists of the construction and combination of elements hereinafter fully described. and set forth in the appended claims. in connection with the accompanying drawing forming part of this specihcation, and in which:

Figure 1 is a side elevation of a muffler cinbodying the invention, Fig. 2 is a vertical section of the same. Fig. 3 is a top plan of the device, and Fig. 4 is a section on the line X-X of 2.

The reference numeral 1 designates an air inlet pipe. having castintegral therewith a pipe 2 disposed horizontally. and at an angle to the pipe 1. as shown.

The pipe 2 is internally threaded at one end for its attachment to a conduit (not shown) for conducting the admixed air and gas to the desired point; and the opposite end 4 of said pipe 2 is internally threaded to receive an injectornostzle externally threaded to fit within the threaded end of the pipe 2, and also formed with integral threads 6 for the attachment thereto of a gas supply pipe. Projecting radially from the pipe 1 are a plurality of equidistant arms 7, andprojecting from-the lower end of said pipe 1 are a plurality of lugs 8 within which is aspider comprising a hub 9, and radially pro ecting arms 10, the outer ends of which bear against the inner surfaces of the lugs 8. Spaces formed between the lugs S constitute air inlets. 4

The improved niufller comprises a cylindrical casing 11, open at its upperend and America, re-.-

arranged arms projecting from I closed at its lower or outer end a he which is permanently secured to the spider by a rivet 13 extending cent-rally through the head l2 and the huh 9 of the spider. The head 12 abuts against the lugs 8 and the spaces between the lugs establish communication between the casing and the interior of the pipe 1 or in other words the said spaces as aforestated form air inlets.

T he casing 12 of the inniiler tits snugly over the ends of the arms 7. leaving inlets 1% of considerable area for the admission of air to the pipe 1 between the lugs The function of the mutiler is to prevent the roar or blowing noise incident to the inrush of air under pressure into the pipe 1, the force of the current of air being accelerated by the suction force of the gas entering through the injector it will be ap arent that the improved muffler is not onij' extremely simple in con-- struction. but the -means for securing it in position provide an attachment for air and gas mixers which may he produced at a minimum of expense, and atiords an et'l'ective device i'or the purpose in view.

Having now described I .y invention what i claim as new, is:-

1. In a muliler, the combination with an air inlet pipe provided with spaced lugs at its outer end to provide a' iniets. and radially-arranged arms projectingirom the periphery of said inlet pipe, of a casing received over said arms having an open inner end and a closed outer end abutting against the ends of the lugs, and means for securing said casing in position.

2. In a muffler, the combination with an air inlet pipe provided with s aced lugs at its outer end to provide air in cts, radiallyhe periphery of-said inlet pipe, and a spider within the pipe at the outer end thereof, of a casing received over said arms having an open inner end and a closed outer end abutting against said lugs, and means for securing the casing to the spider.

3. In a muffler. the combination with an air iniet pipe provided with spaced lugs at its outer end to rovide air'inlets and further having radial y arranged arms projecting from the periphery. of said inlet pipe, of a casing received over said :.rrns having an open inner end anda closed outer end abutting against said rugs, and means for securing the casing fixedly in position over the outer end of said inlet pipe.

4. The combination with an air and gas 5 mixer, including an air-inlet )ipe provided with projecting lugs to provi e air inlets of arms rojecting radially from said air pipe, a spi er supported by said lugs, and a mufiier comprising a cyllndrlcal casing hav- 10 ingan open inner end received over said arms and having a closure head secured to said spider, said head abutting against said lugs. I

In testimony whereof I ailix my signature in the presence of two Witnesses.

JAMES F. PARKER.

\Yitnesses MAX H. SRoLovI'rz, C. A. RENZIEIIAUSER. 

